Boston PD, in advance of a 'free speech rally' for this weekend have posted a list of prohibited items:
http://bpdnews.com/news/2017/8/17/bp...-boston-common
This is good news. I recall a LW Antifa protest down in the Auburn area being in the news that went peacefully b/c the PD down there did the same thing. You may have the right to protest, you don't have the right to perform violence.